JAW CRUSHER, CRUSHING PLANT AND CRUSHING METHOD

摘要

A jaw crusher (100) comprising a body (2) to which are arranged a fixed jaw (3) and a pitman (4) which is movable against the movable jaw for forming a crushing chamber (6) which is open at the top; and the pitman is bearing-mounted to an eccentric shaft (7) which is bearing-mounted rotatably to the body forming so a first pivot point (8) and the pitman is bearing-mounted to the eccentric shaft at an eccentric point of the eccentric shaft forming so a second pivot point (9); and the pitman is supported to the body by a pivot bar (11) which is pivoted at a first end of the pivot bar to the pitman forming so a third pivot point (12) and at a second end of the pivot bar to the body forming so a fourth pivot point (13); and for directing a crushing stroke to the material to be crushed in a direction which is substantially perpendicular to the bisector (6') of the crushing chamber (6): the at least one pivot bar (11) which is pivoted to the pitman is arranged such that a plane passing through the third pivot point (12) and the fourth pivot point (13) is arranged substantially parallel (± 20°) with the bisector of the crushing chamber. A crushing plant. A method for crushing mineral material in a jaw crusher (100) or a crushing plant (200).